BOUGEAREL Alain wrote:
The "Center" of the World is the Earth (Ptolémé) géocentrism or is it the Sun ( Copernic) heliocentrsim?
Is the calculation of the "ascension droite" on the psCh VI card from Ptolémé sytem (then has to be dated before 1473) or is it from Copernic system (after 1473)?
In French :
"Le dessin montre,
1. à gauche, le système de Ptolémée (Iie siècle and in use until end XVth century),
2. à droite le système de Copernic (fin XVe siècle).
La légende, indiquée en bas, montre les éléments fondamentaux dont Ptolémée et Copernic expliquent les relations : le Soleil, une planète, la Terre et la Lune (qui tourne autour de la Terre).
1. Ptolémée place la Terre au centre de l’univers. Le Soleil est représenté comme tournant autour de la Terre. Dans ce système, les planètes tournent autour de la Terre.
2. Copernic place le Soleil au centre de l’univers. Dans son système, les planètes (dont la Terre) tournent autour du Soleil. "
http://www.inshea.fr/sites/default/file ... ernicn.pdf
My guess is a Ptotemaic system....so before 1473.
I know Huck has a another take about this!
Introducing : https://fr.wikipedia.org/wiki/Regiomontanus
Copernicus - carefully - didn't publish his opinion before his death ... and he died 24 May 1543. He was born 19 February 1473.
Regiomontanus (* 1436) came to Italy in 1461 on the invitation of Bessarion ...
In 1461 Regiomontanus left Vienna with Bessarion and spent the next four years travelling around Northern Italy as a member of Bessarion's household, looking for and copying mathematical and astronomical manuscripts for Bessarion, who possessed the largest private library in Europe at the time. Regiomontanus also made the acquaintance of the leading Italian mathematicians of the age such as Giovanni Bianchini and Paolo dal Pozzo Toscanelli who had also been friends of Peuerbach during his prolonged stay in Italy more than twenty years earlier. During his time in Italy he completed Peuerbach's Almagest abridgement, Epytoma in almagesti Ptolemei.
I think, that the Charles VI Tarot was made c. 1463, when Lorenzo was about 14 years old and when Pulci wrote the first half of his "Morgante" (1460-63). It's plausible, that Pulci was engaged for the education of the Medici boys, cause Pulci's family had a mill c. 5 km to a Medici villa in the Mugello, where Lucrezia Tornabuoni occasionally spend the summer time with their children.
The intensive work on the Morgante stopped then (in 1463), likely cause Lorenzo (14 years old) was then prepared for higher function in the Florentine society.
Toscanelli belonged to inner circle of the Medici family, as a mathematician he worked for the Medici bank.